3+3(a-7)=

Solution for 3+3(a-7)= equation:

Simplifying
3 + 3(a + -7) = 0

Reorder the terms:
3 + 3(-7 + a) = 0
3 + (-7 * 3 + a * 3) = 0
3 + (-21 + 3a) = 0

Combine like terms: 3 + -21 = -18
-18 + 3a = 0

Solving
-18 + 3a = 0

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '18' to each side of the equation.
-18 + 18 + 3a = 0 + 18

Combine like terms: -18 + 18 = 0
0 + 3a = 0 + 18
3a = 0 + 18

Combine like terms: 0 + 18 = 18
3a = 18

Divide each side by '3'.
a = 6

Simplifying
a = 6